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I remember a chat with old colleagues about dynamic vs strong typing, we came to an interesting aspect that is related to the cognitive bias inherent to each developer. My self don't like to juggle too many balls at a time so I prefer static typing
I think that working in a statically-typed language can make you more ambitious with refactorings, though. Knowing that the compiler is stopping you doing something incorrect can give you a lot of confidence to try things you wouldn't dare otherwise...
